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A300/A300 XT OPERATING MANUAL
© 2002 Design, 2012 Doc. No. 12-7255-r01 (5/14/12)
DELAYED VIOLATION 1 (DV1)
Once above the Deco Stop Depth for more than 5 minutes, operation will enter DV1 which is a continuation of CV**.
**The difference between DV1 and CV is that DV1 causes operation to enter Violation Gauge Mode 5 minutes after surfacing
from that dive.
The Audible will sound during which the alarm LED and full TLBG will flash. The Down Arrow icon will flash (Fig. 77) until de-
scent is made to below the required Stop Depth.
> Button operations and displays are similar to Deco.
When descent below the required Deco Stop Depth is made, operation will resume in Deco with off gassing credit given (Stop
Time and TAT decrease).
DELAYED VIOLATION 2 (DV2)
If the calculated Deco obligation requires a Stop Depth between 60 FT (18 M) and 70 FT (21 M), operation will enter DV2.
Upon entry into DV2**, the Audible will sound during which the alarm LED and full TLBG will flash. The Up Arrow icon will also
flash until within 10 FT (3 M) of and below the required Stop Depth of 60 FT (18 M).
**The difference between DV2 and general Deco is that DV2 causes operation to enter Violation Gauge Mode 5 minutes after
surfacing from that dive.
> Once within 10 FT (3 M) of and below the required Stop Depth, the full Stop icon (Up and Down Arrows with Stop Bar) will
be displayed solid (Fig. 78).
> Button operations and displays are similar to Deco.
DELAYED VIOLATION 3 (DV3)
Upon descent deeper than the MOD**, the Audible will sound during which the alarm LED will flash. The Up Arrow icon and
the loaded segments of the TLBG will also flash, and Current Depth and Max Depth will only indicate 3 dashes ( - - - ).
**MOD is the Max Operating Depth at which the A300 AI can accurately perform calculations and display data.
MOD = 330 FT (100 M) in NORM, TECH, FREE mode.
MOD = 399 FT (120 M) in GAUG mode.
Upon ascending above the MOD, Current Depth will be restored, however, Max Depth will display 3 dashes for the remainder of
that dive. Also, the Log for that dive will display 3 dashes as the Max Depth.
DV3 MAIN, information includes (Fig. 79) -
> Z+ (or DSAT) icon, algorithm selected.
> CF icon, if set On (TECH only).
> Current Depth as 3 dashes ( - - - ) with FT (or M) icon.
> Up Arrow icon, flashing until above MOD.
> DTR as 3 dashes ( - : - - ) with wave/clock/profile (NDC) icon.
> Gas (tank) 1 icon; one in use (1, 2, or 3 if TECH).
> NX icon, if FO2 is set for Nitrox, blank if Air.
> TLBG flashing, VARI while ascending.
A (< 2 sec) to access ALT 1.
M (2 sec) to access Gas Switching (TECH only).
S (< 2 sec) to silence/acknowledge alarms.
S (press) to activate Smartglo
®
Backlight.
> ALTs are similar to No Deco or Deco, whichever applies.
VIOLATION GAUGE MODE (VGM)
If a Deco Stop Depth greater than 70 FT (21 M) is required, operation will enter VGM. This would be preceded by DV2.
Operation would then continue in VGM during the remainder of that dive and for 24 hours after surfacing.
VGM turns the unit into a digital instrument without any decompression or oxygen related calculations or displays.
Upon activation of VGM, the Audible will sound during which the alarm LED and full TLBG* will flash. The graphics UP VIO and
Up Arrow icon will also be displayed flashing in place of Deco Stop data (Fig. 80), until on the surface.
*After the audible is silenced, the TLBG will be removed.
Fig. 77 - DV1 MAIN
Fig. 78 - DV2 MAIN
Fig. 79 - DV3 MAIN
Fig. 80 - VGM MAIN
(during Audible)
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